Tipula (Vestiplex) jiangi Yang & Yang, 1991

Men, Qiulei, Lu, Zhiyong, Sheng, Pingping, Gui, Xiang, Wang, Zhizhong & Mu, Dan, 2017, Taxonomy on crane flies in family Tipulidae and Limoniidae (Diptera: Tipuloidea) from Yaoluoping National Nature Reserve, Anhui, China, Zoological Systematics 42 (4), pp. 476-489 : 486-489

Tipula (Vestiplex) jiangi Yang & Yang, 1991 ( Figs 54–66 )

Tipula (Vestiplex) jiangi Yang & Yang, 1991: 253 .

Diagnosis. The species is general yellowish-brown in coloration. Head is yellowish-brown with a brown occipital stripe. Prescutum is grayish-brown, heavily pruinose, with four brown stripes. Wings are grayish-brown with cells c and sc darker than ground color. Abdominal tergites one to four are yellowish-brown with darker stripes medially and laterally, tergites five to eight are wholly dark brown. Tergite nine is separated medially into two parts, with a pair of angular arms ventrally. Gonocoxite is elongate, widened basally and gradually narrowed to apex forming a horn directed dorsally.

Description. Male body length 16.0 mm, wing 18.4mm, antenna 3.5 mm.

Head. Rostrum yellowish-brown with nasus slightly darker. Antennae with scape elongated, yellowish, slightly expanded apically; pedicel very short, pot-shaped, yellowish; flagellum with basal two segments yellow, the rest segments yellowish-gray, with slightly enlarged base dark brown, each flagellomere with black verticils distinctly longer than the flagellomeres from which they arise. Palpi brown. Head yellowish -brown, occipital stripe brown, gradually narrowed to apex, the point extending to the base of vertical tubercle ( Fig. 54 ).

Thorax. Pronotum grayish-brown, with a narrowed yellow area on anterior margin. Prescutum grayish-brown, heavily pruinose, with four brown stripes, all stripes with darker margins ( Fig. 55 ). The median stripe broadened apically and gradually narrowed to base, the lateral stripes long-oval ( Fig. 55 ). Scutum grayish-brown, heavily pruinose, lobes with a dark brown spots ( Fig. 55 ). Scutellum grayish-brown, pruinose, median area paler ( Fig. 55 ). Postnotum grayish-brown, heavily pruinose ( Fig. 55 ). Pleura grayish-brown, anepisternum, katepisternum and meron distinctly pruinose ( Fig. 56 ). Halteres with stem yellowish-brown, knob dark brown. Legs with coxae and trochanters yellow; femora yellowish-brown with dark brown apex; tibiae and tarsi dark brown. Wing with ground color grayish-brown, cells c and sc darker than ground color, stigma dark brown, Rs tinged with dark brown at both ends, apex of wing tinged with light brown including bases of cells r 1+2, r 3, r 4+5, m, cu, the bases of cells m and cu tinged with light brown ( Fig. 57 ). Rs relatively long, slightly shorter than R 3, R 1+2 entire, discal cell relatively broad, petiole of cell m 1 distinctly shorter than discal cell ( Fig. 57 ).

Abdomen. Abdominal tergites one to four yellowish-brown with median and lateral stripes, tergites five to eight wholly dark brown ( Fig. 58 ). Sternites one to four yellowish-brown without stripes, sternites five to eight wholly dark brown. Hypopygium dark brown ( Figs 58–59 ). Gonocoxite elongate, separated from sternite nine, widened basally and gradually narrowed to apex forming a horn directed dorsally ( Figs 60–62 ). Tergite nine separated medially, a pair of angular arms arising from ventral surface of tergite nine ( Fig. 61 ). Sternite nine with a median prominence, on each side of which with a pair of finger-like processes ( Fig. 62 ). Outer gonostylus simple, long lobes ( Figs 60–62 ). Inner gonostylus with two beaks and a transverse ridge medially, dorsal angle rounded in outer lateral view, with a transparent angular lobe on inner side in dorsal view ( Figs 60–64 ).

Semen pump with compressor apodeme V-shaped, each arm expanded apically ( Fig. 66 ). Posterior immovable apodeme straight, narrowed to apex, subequal in length to compressor apodeme ( Fig. 65 ). Anterior immovable apodeme with arms broad ( Fig. 65 ). Aedeagus slender, at least 2.5 times longer than semen pump ( Fig. 65 ).

Material examined. 1♂, Anhui, Yaoluoping National Nature Reserve, Yaoluoping Village (30°59'N, 116°04'E), 15 August 2013, coll. Qiulei Men.

Distribution. China (Anhui, Hubei, Sichuan)

Key to crane flies in Yaoluoping National Natural Reserve.

1. Terminal segment of palpus elongate, distinctly longer than rest segments; nasus usually distinct; Sc 1 usually atrophied or incomplete ( Tipulidae )............................................................................................................................................................................................2 Terminal segment of palpus short, subequal to rest segments in length; nasus absent; Sc 1 complete ( Limoniidae ).............................3

2. Second to ninth flagellomere with two branches................................................................................................. Dictenidia yuexiensis Flagellomere without branch................................................................................................................................................................4

3. Inner gonostylus with processes or lobes .............................................................................................................................................5 Inner gonostylus without any prominence .................................................................................... Hexatoma (Eriocera) cleopatroides

4. Terminal of femora with comb-like bristle........................................................................................................................................... 6 Terminal of femora without comb-like bristle...................................................................................................................................... 7

5. Femora with a pale brown subterminal ring; inner gonostylus subtriangular................................. Libnotes (Libnotes) pseudonohirai Femora without such subterminal ring; inner gonostylus oval............................................................... Libnotes (Libnotes) wanensis

6. Pleura with a narrow stripe ................................................................................................................................ Holorusia herculeana Pleura without stripe ................................................................................................................................................ Holorusia henana

7. Rs very short, Sc ending nearly opposite origin of Rs ....................................... Nephrotoma impigra anqingensis Men , subsp. nov. Rs elongate, Sc meeting R beyond origin of Rs ...................................................................................................................................8

8. Male hypopygium with tergite nine produced into a simple finger-like prominence apically................... Tipula (Yamatotipula) nova Tergite nine of male hypopygium without such prominence apically .................................................................................................. 9

9. Ovipositor with hypovalva short, triangular....................................................................................................................................... 10 Ovipositor with hypovalva elongated, acinacifoliate ......................................................................................................................... 11

10. Tergite nine with narrow notch medially, apically divided into two finger-like projections ... Tipula (Emodotipula) yaoluopingensis Tergite nine without such notch and finger-like projections...................................... Tipula (Emodotipula) alexanderi Men , sp. nov.

11. Tergite nine produced into narrowed, sword-shaped projection in lateral angle .......................... Tipula (Pterelachisus) biaciculifera Tergite nine not as above....................................................................................................................................................................12

12. Gonocoxite elongate, paliform apically ...................................................................................................... Tipula (Vestiplex) coxitalis Gonocoxite short, acute apically ..................................................................................................................... Tipula (Vestiplex) jiangi Funding This study is supported by grants from the National Natural Science Foundation of China (31300551), the start-

up grant of scientific research from Anqing Normal University (044-K05000130005).

Acknowledgments I wish to express sincere thanks to Dr. Pjotr Oosterbroek, University of Amsterdam, Amsterdam, the Netherlands, for his help with literature and for his valuable web site, the Catalogue of the Craneflies of the World (http://ccw.naturalis.nl/index.php). I also want to thank Dr. Pavel Starkevich, the Nature Research Centre, Lithuania, for his help with translation of literature in Russian.

Figures

Figures 54–60. Tipula (Vestiplex) jiangi. 54. Head, dorsal view. 55. Thorax, dorsal view. 56. Thorax, lateral view. 57. Wing. 58. Abdomen, lateral view. 59, 60. Hypopygium, lateral view. Scale bars: 54–58=1.0mm; 59–60=0.5 mm.

Figures 61–66. Tipula (Vestiplex) jiangi. 61. Hypopygium, dorsal view. 62. Hypopygium, ventral view. 63. Inner gonostylus, lateral view. 64. Inner gonostylus, dorsal view. 65. Semen pump, lateral view. 66. Compressor apodeme, dorsal view. Scale bars: 61–62= 0.5mm; 63–66=0.25mm.